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From: Christophe Leroy <christophe.leroy@c-s.fr>
To: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: mikey@neuling.org, linux-kernel@vger.kernel.org,
	npiggin@gmail.com, paulus@samba.org,
	naveen.n.rao@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v4 0/5] Powerpc/Watchpoint: Few important fixes
Date: Sat, 12 Oct 2019 10:51:33 +0200
Message-ID: <de06dac0-3103-64ed-0e97-c2b6972c59c2@c-s.fr> (raw)
In-Reply-To: <3e31e5f7-f948-512a-054c-9ad10103ccc0@linux.ibm.com>



Le 10/10/2019 à 06:44, Ravi Bangoria a écrit :
> 
>>> @Christophe, Is patch5 works for you on 8xx?
>>>
>>
>> Getting the following :
>>
>> root@vgoip:~# ./ptrace-hwbreak
>> test: ptrace-hwbreak
>> tags: git_version:v5.4-rc2-710-gf0082e173fe4-dirty
>> PTRACE_SET_DEBUGREG, WO, len: 1: Ok
>> PTRACE_SET_DEBUGREG, WO, len: 2: Ok
>> PTRACE_SET_DEBUGREG, WO, len: 4: Ok
>> PTRACE_SET_DEBUGREG, WO, len: 8: Ok
>> PTRACE_SET_DEBUGREG, RO, len: 1: Ok
>> PTRACE_SET_DEBUGREG, RO, len: 2: Ok
>> PTRACE_SET_DEBUGREG, RO, len: 4: Ok
>> PTRACE_SET_DEBUGREG, RO, len: 8: Ok
>> PTRACE_SET_DEBUGREG, RW, len: 1: Ok
>> PTRACE_SET_DEBUGREG, RW, len: 2: Ok
>> PTRACE_SET_DEBUGREG, RW, len: 4: Ok
>> PTRACE_SET_DEBUGREG, RW, len: 8: Ok
>> PPC_PTRACE_SETHWDEBUG, MODE_EXACT, WO, len: 1: Ok
>> PPC_PTRACE_SETHWDEBUG, MODE_EXACT, RO, len: 1: Ok
>> PPC_PTRACE_SETHWDEBUG, MODE_EXACT, RW, len: 1: Ok
>> PPC_PTRACE_SETHWDEBUG, MODE_RANGE, DW ALIGNED, WO, len: 6: Ok
>> PPC_PTRACE_SETHWDEBUG, MODE_RANGE, DW ALIGNED, RO, len: 6: Fail
>> failure: ptrace-hwbreak
>>
> 

I also tried on a 83xx (book3s/32). This one has a regular DABR :

root@vgoippro:~# ./ptrace-hwbreak
test: ptrace-hwbreak
tags: git_version:v5.4-rc2-710-gf0082e173fe4-dirty
PTRACE_SET_DEBUGREG, WO, len: 1: Ok
PTRACE_SET_DEBUGREG, WO, len: 2: Ok
PTRACE_SET_DEBUGREG, WO, len: 4: Ok
PTRACE_SET_DEBUGREG, WO, len: 8: Ok
PTRACE_SET_DEBUGREG, RO, len: 1: Ok
PTRACE_SET_DEBUGREG, RO, len: 2: Ok
PTRACE_SET_DEBUGREG, RO, len: 4: Ok
PTRACE_SET_DEBUGREG, RO, len: 8: Ok
PTRACE_SET_DEBUGREG, RW, len: 1: Ok
PTRACE_SET_DEBUGREG, RW, len: 2: Ok
PTRACE_SET_DEBUGREG, RW, len: 4: Ok
PTRACE_SET_DEBUGREG, RW, len: 8: Ok
PPC_PTRACE_SETHWDEBUG, MODE_EXACT, WO, len: 1: Ok
PPC_PTRACE_SETHWDEBUG, MODE_EXACT, RO, len: 1: Ok
PPC_PTRACE_SETHWDEBUG, MODE_EXACT, RW, len: 1: Ok
PPC_PTRACE_SETHWDEBUG, MODE_RANGE, DW ALIGNED, WO, len: 6: Ok
PPC_PTRACE_SETHWDEBUG, MODE_RANGE, DW ALIGNED, RO, len: 6: Ok
PPC_PTRACE_SETHWDEBUG, MODE_RANGE, DW ALIGNED, RW, len: 6: Ok
PPC_PTRACE_SETHWDEBUG failed: Invalid argument
failure: ptrace-hwbreak

Christophe

  parent reply index

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-25  4:06 Ravi Bangoria
2019-09-25  4:06 ` [PATCH v4 1/5] Powerpc/Watchpoint: Fix length calculation for unaligned target Ravi Bangoria
2019-09-25  4:06 ` [PATCH v4 2/5] Powerpc/Watchpoint: Don't ignore extraneous exceptions blindly Ravi Bangoria
2019-09-25  4:06 ` [PATCH v4 3/5] Powerpc/Watchpoint: Rewrite ptrace-hwbreak.c selftest Ravi Bangoria
2019-09-25  4:06 ` [PATCH v4 4/5] Powerpc/Watchpoint: Add dar outside test in perf-hwbreak.c selftest Ravi Bangoria
2019-09-25  4:06 ` [PATCH v4 5/5] Powerpc/Watchpoint: Support for 8xx in ptrace-hwbreak.c selftest Ravi Bangoria
2019-10-07  6:35 ` [PATCH v4 0/5] Powerpc/Watchpoint: Few important fixes Ravi Bangoria
2019-10-09 13:37   ` Christophe Leroy
2019-10-10  4:44     ` Ravi Bangoria
2019-10-10  6:25       ` Ravi Bangoria
2019-10-12  7:31         ` Christophe Leroy
2019-10-14  3:44           ` Ravi Bangoria
2019-10-10  9:30       ` Christophe Leroy
2019-10-12  8:51       ` Christophe Leroy [this message]
2019-10-14  3:44         ` Ravi Bangoria

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